at first time dermatophilus (d.) congolensis-infection was diagnosed in brandenburg in 3 sheep herds and in one horse, which had contact to diseased sheep. the causative agent was introduced from west-germany probably. cause of the disease was influenced by a longer rain period and by secondary infections through staph. aureus var. ovis. the morbidity came up to 90%, the mortality of lambs was 10%. clinical picture, diagnostic and control of the disease are described. economical losses are cause ...

infection patterns in the first intermediate host of dicrocoelium dendriticum.

in order to establish the infection patterns in the first intermediate host of dicrocoelium dendriticum, investigations were carried out on sheep pastures situated in the eastern part of brandenburg, germany, during the grazing periods in 1986, 1987, 1989 and 1990. it was found that the majority of specimens of the first intermediate host, helicella obvia, become infected in the autumn of their second year of life, when their shell diameter is of medium size. the percentage of snails containing ...

diversionary role of hoofed game in the transmission of lyme disease spirochetes.

to determine whether the presence of ungulates may inhibit transmission of the agent of lyme disease (borrelia burgdorferi) while promoting the abundance of its european vector tick (ixodes ricinus), we compared the feeding density of subadult ticks on roe deer (capreolus capreolus), red deer (cervus elaphus), fallow deer (dama dama), and wild sheep (ovis ammon) near berlin and in brandenburg state, germany. the prevalence of spirochetal infection in these ticks was compared with that in ticks s ...

feeding patterns of biting midges of the culicoides obsoletus and culicoides pulicaris groups on selected farms in brandenburg, germany.

host feeding patterns of engorged sibling species of the culicoides obsoletus and culicoides pulicaris groups captured during three nights on two selected farms maintaining either cattle, sheep, horses, and pigs (seedorf, brandenburg) or cattle, sheep, moufflons, and red and fallow deer (paulinenaue, brandenburg) were determined by polymerase chain reaction amplification using conserved primers and sets of species-specific primers derived from vertebrates mitochondrial cytochrome b. out of a tot ...